withdrawable circuit breaker with guide frame 4-pole, size I, IEC In=800A to 690V, AC50/60Hz Icu=66kA at 500V rear connection horizontal Overcurrent release ETU 45 LSING protection adjustable 0.4-1 in with cubicle bus and Ground fault protection Opt.: Comm./measuring func./ZSS Motorized/manual operating mechanism with spring charging motor 24-30 V DC Activation 24 V DC without 1st auxiliary release without 2nd auxiliary release 4NO+4NC B05= Rated current reference module 500 A for ETU25, 27, 45, 55, 75, 76 for setting rated current in C20= Spring charge status indicator not possible with option F02 C22= Ready-to-close signaling F23= Internal current transformers 4-pole switch BGI K06= 2nd tripped signaling contact, 1 NO (S25) not possible with option F02 or F12 only possible with Z option K07 K07= Tripped signaling contact, 1 CO not possible with option F02 R10= Arc chute cover On not possible with option A05 Rated voltage 1000 V R15= Position signaling switch, withdrawable part 3 changeover contacts R21= Shutter 2-part can be locked with bracket lock